TNTsim3D^TM

• Sample Landscape Files from the Building 3D Landscapes tutorial booklet (18 February 2002)
  • lkmead.sim  This landscape file covers part of Lake Mead and surrounding areas in Nevada (USA), created using the exercise steps on page 4 of Building 3D Landscapes. The texture image is a color-composite of three Landsat Thematic Mapper bands showing a "natural" color image of the area.
  • kings.sim  This landscape file shows a "natural" color satellite image of Kings Canyon National Park in the Sierra Nevada Mountains of California (USA). Following the steps on page 7 of Building 3D Landscapes, the extents and orientation of the landscape were set using the Clip/Orient to Active Layer option, with the satellite image as the active display layer.
  • bighorn.sim  This landscape file shows a satellite image with a hydrology vector overlay covering an area at the northern edge of the Bighorn Basin in northern Wyoming (USA). The Output Extents tool was used to manually clip the objects using the steps on page 8 of Building "D Landscapes.
  • pga.sim  Landscape files do not need to represent a physical surface. This file uses a gridded representation of relative earthquake risk in as the 3D terrain layer. The data cover the states of California and Nevada, and specifically show an estimate of the peak ground acceleration that has a 10% probability of being exceeded during the next 50 years (as computed by researchers at the US Geological Survey). The texture is a color shaded relief version of the same data overlaid with vector outlines of the two states. High ridges" (areas of highest risk) flank the major active fault zones. This file was produced using the steps on page I I of Building 3D Landscapes.
  • redmtn.sim  This landscape file shows an area along the eastern edge of the Sierra Nevada Mountains in California. Below the steep mountain front are active alluvial fans and a number of young reddish-brown cinder cones from which erupted dark basalt lava flows. The texture layer is a pan-sharpened Landsat 7 satellite image created using the RGBI raster display option in the Landscape Builder. Following the steps on page 10 of Building 3D Landscapes, the Texture/Terrain Size Ratio setting in the Landscape Builder was used to incorporate the high spatial detail of the RGBI image into the texture layer while matching it to a coarser-resolution terrain layer.
  • teton1.sim  This landscape file shows a color shaded relief view of part of Grand Teton National Park and surrounding areas in northwest Wyoming (USA). As detailed on page 5 of Building 3D Landscapes, all data used to create the simulation were derived from the elevation model used to create the terrain surface. To create the texture image in the Landscape Builder, a copy of the elevation raster with a color palette was overlaid with partial transparency over a shading raster computed from the surface.
  • teton2.sim  This landscape file adds two vector layers (hydrology and roads) to the landscape shown in teton1.sim. The vector layers were clipped to the extents of the terrain, following the steps on page 6 of Building 3D Landscapes.

25 March 2009

page update: 16 Jun 11

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